Shackle



FIG. 1 is a perspective view of a shackle of the new design;

FIG. 2 is a front view of the shackle of FIG. 1;

FIG. 3 is a rear view of the shackle of FIG. 1;

FIG. 4 is a right side view of the shackle of FIG. 1, wherein each sideis a mirror image of each other;

FIG. 5 is a top view of the shackle of FIG. 1;

FIG. 6 is a bottom view of the shackle of FIG. 1;

FIG. 7 is a perspective view of another shackle of the new design;

FIG. 8 is a front view of the shackle of FIG. 7;

FIG. 9 is a rear view of the shackle of FIG. 7;

FIG. 10 is a right side view of the shackle of FIG. 7, wherein each sideis a mirror image of the other;

FIG. 11 is a top view of the shackle of FIG. 7; and,

FIG. 12 is a bottom view of the shackle of FIG. 7.

The portions of the Figures shown in phantom lines are not part of theclaimed design, but are for illustration purposes only.

The ornamental design for a shackle, as shown and described.